﻿using System;
using System.Collections.Generic;
using System.Text;

namespace Vincent._IO
{
    public class Zip
    {
        /// <summary>
        /// 压缩文件
        /// </summary>
        /// <param name="FileToZip"> 待压缩的文件 </param>
        /// <param name="ZipedFile"></param>
        /// <param name="CompressionLevel"> 压缩等级 </param>
        /// <param name="BlockSize"></param>
        public static void ZipFile(string FileToZip, string ZipedFile, int CompressionLevel, int BlockSize)
        {
            ////如果文件没有找到，则报错
            //if (!System.IO.File.Exists(FileToZip))
            //{
            //    throw new System.IO.FileNotFoundException("The specified file " + FileToZip + " could not be found. Zipping aborderd");
            //}

            //System.IO.FileStream StreamToZip = new System.IO.FileStream(FileToZip, System.IO.FileMode.Open, System.IO.FileAccess.Read);
            //System.IO.FileStream ZipFile = System.IO.File.Create(ZipedFile);
            //ZipOutputStream ZipStream = new ZipOutputStream(ZipFile);
            //ZipEntry ZipEntry = new ZipEntry("ZippedFile");
            //ZipStream.PutNextEntry(ZipEntry);
            //ZipStream.SetLevel(CompressionLevel);
            //byte[] buffer = new byte[BlockSize];
            //System.Int32 size = StreamToZip.Read(buffer, 0, buffer.Length);
            //ZipStream.Write(buffer, 0, size);
            //try
            //{
            //    while (size < StreamToZip.Length)
            //    {
            //        int sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
            //        ZipStream.Write(buffer, 0, sizeRead);
            //        size += sizeRead;
            //    }
            //}
            //catch (System.Exception ex)
            //{
            //    throw ex;
            //}
            //ZipStream.Finish();
            //ZipStream.Close();
            //StreamToZip.Close();
        }

        public void ZipFileMain(string[] args)
        {
            //string[] filenames = Directory.GetFiles(args[0]);

            //Crc32 crc = new Crc32();
            //ZipOutputStream s = new ZipOutputStream(File.Create(args[1]));

            //s.SetLevel(6); // 0 - store only to 9 - means best compression

            //foreach (string file in filenames)
            //{
            //    //打开压缩文件
            //    FileStream fs = File.OpenRead(file);

            //    byte[] buffer = new byte[fs.Length];
            //    fs.Read(buffer, 0, buffer.Length);

            //    FileInfo info = new FileInfo(file);
            //    ZipEntry entry = new ZipEntry(info.Name);

            //    entry.DateTime = DateTime.Now;

            //    // set Size and the crc, because the information
            //    // about the size and crc should be stored in the header
            //    // if it is not set it is automatically written in the footer.
            //    // (in this case size == crc == -1 in the header)
            //    // Some ZIP programs have problems with zip files that don't store
            //    // the size and crc in the header.
            //    entry.Size = fs.Length;
            //    fs.Close();

            //    crc.Reset();
            //    crc.Update(buffer);

            //    entry.Crc = crc.Value;

            //    s.PutNextEntry(entry);

            //    s.Write(buffer, 0, buffer.Length);

            //}

            //s.Finish();
            //s.Close();
        }
    }
}
